FWD: Problems with queryUsingPoint (PHP)...

Mon Dec 4 15:56:22 EST 2000

------------- Begin Forwarded Message -------------

From: "Andy Waxman" <awaxman at speakeasy.org>
To: <mapserver-info at lists.gis.umn.edu>
Subject: Problems with queryUsingPoint (PHP)...
Date: Mon, 4 Dec 2000 15:30:14 -0500
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
X-Priority: 3 (Normal)
X-MSMail-Priority: Normal
Importance: Normal
X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4133.2400

I am using the PHP extension with php4.0.3 with the 11/1 nightly build of
3.3.0.12.

I am trying to write a simple identify tool which opens to a new window.

The problem is that browser complains with an empty page error when I try to
query the layer.
I don't even get "Hello World" dumps.

Has anyone heard from DMSolutions about their big contract for a new version
of the php module with extended functionality?

TIA,
Andy Waxman
awaxman at speakeasy.org

Here is the php code (theme,mapx and mapy are passed in as args)
<?
  // Only Load the extension if needed.
  if (!extension_loaded("php_mapscript.so"))
     dl("php_mapscript.so");

  $map = ms_newMapObj("gaar.map");

  $aLayer = $map->getLayer($theme);

  print("<html><head><title>Identify Results for ");
  print($aLayer->description);
  print("</title></head><body>\n");

  print("Hello World<br>");

  $pt = ms_newPointObj();
  $pt->setXY($mapx,$mapy);

  // Huge Tolerance to ensure something is hit.
  $qrset = $aLayer->queryUsingPoint($pt, MS_MULTIPLE, 300);

  if ($qrset==0)
    print("No Results Found<br>");
  else
    print("Got Results<br>");

  $qrset->free();

  print("Hello World");
  print("</body></html>");
?>

Here is my map file
MAP
    NAME GAAR
    SIZE 653 480
    STATUS ON
    EXTENT -144243.3545 1838671.0097 202145.6455 2093461.0097
    UNITS METERS
    SHAPEPATH /usr/local/ak_data/
    WEB
       IMAGEPATH "/usr/local/apache/htdocs/tmp/"
       IMAGEURL "/tmp/"
    END

    LAYER
        NAME "Landsat TM Mosaic"
        DESCRIPTION "Landsat TM Mosaic"
        STATUS ON
        DATA data/imagery/gaar_tm_432.tif
        TYPE RASTER
    END

    LAYER
        NAME ima
        DESCRIPTION "Intensive Mapping Areas"
        STATUS ON
        DATA data/themes/imabox
        TYPE polygon

        CLASSITEM 'box_id'
        CLASS
           NAME "Intensive Mapping Areas"
           OUTLINECOLOR 0 0 0
        END

        QUERYITEM 'box_id'
        QUERY
          EXPRESSION /./  # Get all the items
          TEMPLATE "null" # Not using a template
        END
    END

    LEGEND
       KEYSIZE 18 12
       LABEL
         TYPE BITMAP
         SIZE MEDIUM
         COLOR 0 0 89
       END
       STATUS ON
    END
END

------------- End Forwarded Message -------------